This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAID100X50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAID100X50 in place of this model. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 50mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAID100X50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID100X50
About the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50
The AirTAC B04-SID100X50 is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SID100X50. Mechanically identical to the standard model, it features a 100mm bore, 50mm stroke, G1/2 air port, and M20x1.5 rod-end thread. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal at 3681 N @0.5 MPa. This model is discontinued and the exact drop-in replacement is the SAID100X50, which reuses the same ISO 15552 mounting interface, bore, stroke, and porting.
The SAI replacement family introduces an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life, alongside SAIL and BSAI lock variants absent in the SI line. For sizing, the equal-both-ways force yields a safe working load of roughly 2209 N (60% of the 3681 N @0.5 MPa figure) and a vertical lift capacity of about 188 kg with a 2:1 margin. Note this SKU lacks a magnet (-S) and cannot take a magnetic switch; a plain cylinder will not hold a load on air loss, as the air cushion only decelerates near stroke end.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X50 |
| Bore size | Ø100 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID100X50 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The B04-SAID100X50 produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50 Is Used
Excavator Linkage Control
Uses the equal both-ways force of the double rod to actuate heavy-equipment linkage components on construction machinery, ensuring stable push and pull without anti-rotation issues.
Crusher Feed Gate
Employs the double-rod design to drive a feed gate on a construction-site rock crusher, where the rear rod simultaneously operates a mechanical cam for sequencing.
Loader Boom Alignment
Leverages the ISO 15552 mounting interface and 100mm bore to align loader boom sections, using the equal force both ways to maintain precise positioning under heavy load.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50 with the B04-SAID100X50
To replace the discontinued B04-SID100X50, select the SAID100X50 drop-in, keeping the identical ISO 15552 interface, G1/2 port, and 50mm stroke. When sizing both ways, verify the equal force (3681 N @0.5 MPa) meets your needs, or step to neighbour bores (80mm or 125mm) for different loads. A double rod is right when you need anti-rotation stability or must drive two tools from one piston. Mounting options include FA, LB, and TC brackets. Because this SKU lacks the -S magnet, it cannot support sensing; if sensing is required, select an -S model. For stroke lengths >=300mm, account for side-load deflection on the rod.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X50
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X50 FAQ
Yes, the B04-SID100X50 (construction-machinery dedicated SID100X50) is discontinued. The exact drop-in replacement is the SAID100X50, which shares the same ISO 15552 interface, 100mm bore, 50mm stroke, G1/2 port, and equal both-ways force. The B04- prefix only denotes the construction-machinery application and does not change any physical spec.
Force is equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The air port is G1/2. This double-acting, double-rod cylinder operates at 30-800 mm/s with a 36mm adjustable cushion at each end.
Related AirTAC SAI Cylinders
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